Loading and unloading apparatus



A. S. HECKER. LOADING AND uNLoALI'IIIIG APPARATUS.

APPLICATION FILED MAY 2e, 1917. 1,327,324. Patented Janf, 1920.

' s SHEETS-SHEET I.

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lq N N O w v n N. L) o 7 GJ In o m m 'v oo n'ucmoz A. S. HECKER.

LOADING AND UNLOADING APPARATUS.

AP?LlCATION FILED MAY 26, 19H.

1,327,324. Patented Jan.6,1920.

3 SHEETS--SHEET 2.

A. s. HECKER.

LOADING AND UNLOADING APPARATUS.

APPLICATION FILED MAY 26. 19H.

Patented Jan. 6, `1920.

3 SHEETS-SHEET 3.

ARTHUR S. HECKER, OF CLEVELAND, OHIO.`

LOADING AND4 UNLOADING APPARATUS. I

Speciication of Letters Patent.

p Patented J an. 6, 1920.

Application filed May 26, 1917. Serial No. 171,106.

To all whom it may concern:

B e it known that I, ARTHUR S. HECKER, a citizen of the United States,residing at Cleveland. in the county of Cuyahoga and State of Ohio, haveinvented a certain new and useful Improvement in. Loading andUnloadingApparatus, of which the following is a full, clear, andQeXactdescription, reference being had to the accompanying drawings.

This invention relates to apparatus for loading and unloading, and hasfor its general object to provide an apparatus of this character havinga wide range of operation and one which will render more positive anddirect the control of the load carrying device, both in itsload-receiving and in its dif.- charging position. A further and morelimited object of the invention is to secure the foregoing objects inconnection with a load-carrying.device of the clam-shell bucket type andto enable the said device to take its charge or load manner. Further andmore limited objects of the'invention will appear hereinafter and willbe realized in and through the combinations of elements embodied in theclaims hereto annexed.

In the drawings forming part hereof, Figure 1 represents a sideelevation of my apparatus; Fig. 2 a sectional detail through the head bywhich the bucket is rotatably supported; Fig. 3 a sectional Viewcorresponding substantially to the line 3 3 of Fig. 2; Fig. 4 a detailin elevation of the end of the rigid member or dipper-stick; Fig. 5adetail in plan of the said member and'parts of thek means for rotatingthe bucket; Fig. 6 a side elevation, with certain parts shown insection, of the means for maintaining a pivotal connection between therigid member and `the boom while maintaining a driving connectionbetween'the said member and. the means for moving the same in thedirection of its length; and Fig. 7 a sectional detail correspondingsubstantially vto the line 7-'-7 of Fig. '6.

Describing .by reference characters l the various parts illustratedherein, 1 denotes the deck or platform of a carriage of the steam-shoveltype. This carriage is shown as provided with wheels 2 and a platformV 3mounted on a truck 4. carried by the deck or'platform 1, the deck orplatform being rotatably mounted on the other drums mounted on saidplatform.

`means of a guy 18.

in a particularly eiicientV 5 denotesa boom F platform 3 by means r-of.the wheels 6, in Athe. usual manner. 7 denotes an ,engine which, throughsuitable standard connections (not illustrated). is adapted to rotatethe pinion 8 meshing with the gear 9 on the platform 3, thereby torotate the deck oi"platfoim 1.

10 denotes a drum on the platform 1 driven by the engine 7 in anysuitable manner, and 11 and 12 denote' the geared heads of two 13denotes a lifting line for the boom 5, said line being wound upon thedrum' 10 andv eX- tending thence around a slieave 14 on a strut 15,thencefaround a sheave 16 on said boom, v

the end of the line being connected by a bail 17 to the upper end ofsaid strut and the strut, being supported from thecarriage by 19 denotesa crowding engine onv the boom 5, said engine being adapted, by suitablestandard driving connections (not illustrated) tov operate pinions 20.The boom l5 is preferably of forked construction and is adapted toreceive between the side mem. bers thereof a longitudinally adjustablerigid member 21, said member being constructed in substantiallyl thesame manner as. the ordinary dipper stick of a steamshovel, butbeingconsiderably longer than the ordinary dipper stick, forreasons tobe explained hereinafter. Themember'21 is provided with racks 22 adaptedto mesh with the pinions 20. The outer end of the i member 21 isprovided with a bail 23 to which there is connected the lifting line 21,said line extending over a sheave 25 on the outer end of the boom 5 andthence to a drum on the platform, the line being shown as extending tothe drum having the geared head 12. Secured to opposite sides of themember 21 are the straps 26, said strapsforming a forked support for thebucket as Well as for some of the operating parts therefor. l27 denotesa pin which extends through the ends of the straps 26 and through thevsides of a metal frame 28 by which the bucket is rotatably supported.Mounted on the pin 27 is the sheave 29V for the loading orbucket-closing u line. The frame 28 is provided on each side thereofwith a rearward extension carrying a sheave 30. The bottom of the frame28 is provided with an aperture through which there eX- tends adouble-headed bolt, the body of the bolt being indicated at 31 and theupper head sheave 35, preferably may be automatically 32 resting uponthe bottom of the frame 28. The lower head 33 of said bolt forms arotatable support for the bucket-head frame 34. This head is providedwith a horizontal made in' two sections connected by means of lugs 36and bolts 37 and applied to a rectangular neck 31a on the frame 3l. Thesheave, 35 is located immediately beneath and forward of the sheaves 30.If desirable or necessary, balls or other antifriction devices 33amaybeinterposed between the bolt head 33 and the adjacent surface of thebucket-head frame.

Pivoted to opposite sides of the head frame 31 are the links 3S whichare connected to the opposite members 39 of a clam shell bucket, saidmembers being pivote'd in the usual manner to the support l0. l1 denotesthe closing line, which may be secured at one end to the head frame 3lin any convenient manner. as by means of a hook l2 (see F ig. 2), saidline extending around a sheave l2 connected to the. supporting frame l0and thencel over the sheave 2.. over a sheave 43, carried by a bracket1lb above the space between the side membeis of the boom 5 adjacent tothe pivot for the member :21 and thence to a winding drum on the deckory platform 1, the drum shown beingv that. provided with the gearedhead 11.

In order to maintain the racks 22 in mesh with the pinions 20 and topermit the member 21 to pivot about the shaft of said pinions as an axisin all longitudinal adjustments of the said member, I provide a saddlebloc-k having a. central projection ll extending between the sides ofthe member 21 and pivoted upon a nin or shaft- 15 which supports thepinions :20. Y

As it is desirable. if not absolutely necessary, to position theopposite .members 39 of the bucket so that. they may operate to the bestadvantage in taking and discharging a load, I provide means whereby the`bucketrotated through the longitudinal movements of the member 21.locating the means for imparting this rot-ary movement in convenientrelation to the operator of the crowding engine. The constructionwhereby this result is secured comprises the sheaves 30 and 35 and meansfor rotating the latter sheave and thereby the bucket-head frame 3l. Themeans shown herein comprises a pair of rods 16 which are slidablymounted upon the side members of the dipper stick :21.being guidedthereupon by tubular projections l? and 1S. The tubular projections 18are preferably formed upon the top of the saddle block 1l whichmaintains the member 2l in operative 'relation to the pinions 20. Eachrod 16 is provided with a head or abutment i9, between which and theprojections 1T helical springs 50 are inserted. these springs beingnormally un'der considerable compression. Each of the to the work,

its load, the member 21 will operate as locking-engagement with itscoperating rod 4G. The outer or forward ends of the rods 16 areconnected to a line or other suitable pliable connection sheaves 56 on`the member Q1, under the sheaves 30 and aroimd the sheaves 35.

of the handles 54, the corresponding cam may be brought into 55 whichextends over lith the parts constructed and arranged I asdescribed, theoperation will be as follows :`Ordinarily, there will be no occasion foradjusting the boom 5 in a.I vertical plane aft-er the initialadjustment, as the wide range of operation secured through the use ofthe long member 21 will ordinarily be suiiicient to enable. .thelatterrto take its load either at a point considerably removed from theplatform l or in immediate proximity thereto. Should occasion requirethe vertical adjustment. of the boom 5, this adjustment may be obtainedin the usual manner. The crowding engine oprator is enabled, by therigid member 21. to quickly and conve-niently place the bucket inoperative relation the positioning of the bucket without swinging oroscillation thereof being secured by reason of its close connectionwith" the end of said rigid member. This adaptability is advantageouswhen the bucket is in both its load-taking and its load-dischargingpositions. F urthermore. when a bucket is arigid strut, thereby holdingthe bucket down during the closing movement thereof and resisting andpreventing any lifting movemeintof the bucket due to the It will beobserved that the bucket-closing line 11 extends substantially parallelto the rigid member 21. Leading the line 41 substantially parallel tothe member 2l prevents the said line from forming an angle with saidmember, whereby there is no tendency to break or buckle the said member.It will be observed that, as the sheave 43 is located near the axisaboutv which themember 2 1 pivots. this parallel relation will bepreserved in all operating vpositions of the bucket.

Reference has been madehereinbefore to the desirability of rotating thebucket. By the construction described herein. the crowding engineoperator is enabled to impart such rotation to clamping one or the otherof the rods 46 as the member 21 yapproaches the end of its stroke(either inward or outward). Assume that the member 21 is being movedoutwardly and thatthe proximity to its load-takingl position. If

for quick and positive location taking closiiig action.

the bucket by merely i bucket 1s in close 'eiliciently on the material,the operator .2l is being run meanest itis desirable to impart a rotarymovement to the bucket in brder to enable it to operate clamps one orthe other of the rods 46 by throwing down the handle 54 o the camthereabove. Further outward movement of the member 21 pulls the otherrod .outwardly through its guide proj ections47 and i8, compressing thespring 50 and rotating the bucket through the sheave 35. When the bucketVhas taken its load and the member inwardly, the operator can thenrelease the cam grip, and the springs will cause the rods to assume `thepositions shown in the drawings. As the bucket reaches its dischargingposition, if desirable to impart rotation thereto, one. of the rods 46may be clamped, ln case the further movement of the member 2l is anoutward movement, the bucket will be rotated in the mannerdescribedbefore ln the event that the member 21 is movedA inwardly, theY v springon the rod which is1 clamped will be` compressed betweenthe head 49 andthe tubular guide 47 while the spring on the opposite rod will' expand,thereby taking up the pliable connection 55 and rotating the sheave 35and the bucket. f

Having thus described my invention, what l claim is:

ylfln an apparatus of the character described, the combination, with aswinging boom, of a rigid member pivotally supportedp means for movingsaid member in the direction of its length, a,l loadby said boom,

carrying device carried by said) member,

j loading means for said device, means for moving said member aboutitspivotal support, lmeans for operating said loading means, and meansoperable by the adjustment of said member for imparting a; rotary Imovement to said device.

2'. ln'an appa-ratusof the character ldescribed, the combination, withra swinging boom, of a rigid member pivotally supported by said boom,means for moving said member 1n the directlon of its length, a clamshellbucket carried by said member, a clos;

ingr line for said bucket extending substan-l tially parallel with saidmember and guided by said boom, a lifting line for said member alsoguided by said, boom, means for operating said lines, and means operableby the movement of said member in the direction of its length torimparting a Arotary movement to said bucket. c

3. ln an apparatus of the character described, Vthe combination, with aswinging boom,J of a` rigid member pivotal'ly sup'-4 portedby said boom,means `or moving said member in the direction of its length, aloadcarrying device carried by said member, a loading line for saiddevice extending substantially parallel with said member and guided bysaid boom, member about its piv operating said line,

tion of its length for imparting a rotary movement to sai device: .y 4.rlhe combination wlth a rigid supportmeans for moving said, tal support,means for p and means operable by' v the movement' of said member inthedirecing arm, of'a bucket provided with a head frame, a verticalpivotbolt supporting and directly connecting said head frame to the arm,(and means to rotate the had frame and bucket on said pivot. v

ln testimony whereof, l hereunto aix my signature., v

